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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #383535
Research Project: Genetics and Integrated Management of Plant Parasitic Nematodes in Cotton and Peanut

Location: Crop Genetics and Breeding Research

Title: Nematode resistance

Author
item Davis, Richard
item Stetina, Salliana - Sally

Submitted to: Compendium of Cotton Diseases and Pests
Publication Type: Book / Chapter
Publication Acceptance Date: 5/7/2021
Publication Date: N/A
Citation: N/A

Interpretive Summary: Many species of nematodes parasitize cotton roots, but only a few are considered to cause significant economic damage in most areas where cotton is grown. The two most important are the cotton root-knot nematode (Meloidogyne incognita), which is found worldwide, and the reniform nematode (Rotylenchulus reniformis), found in many tropical regions and certain warmer areas of the temperate zone, including the southern United States from Texas eastward. Nematode resistance is defined as a trait that limits the ability of a nematode to reproduce on a favorable host. This section reviews resistance in cotton to M. incognita and R. reniformis and summarizes the history, current status, and future prospects for developing and improving nematode-resistant cotton cultivars. Nematode resistance is also discussed in relation to resistance to Fusarium wilt. Both known and potential sources of resistance to the root-knot nematode and the reniform nematode are identified. Selected references for additional information are given.

Technical Abstract: Many species of nematodes parasitize cotton roots, but only a few are considered to cause significant economic damage in most areas where cotton is grown. The two most important are the cotton root-knot nematode (Meloidogyne incognita), which is found worldwide, and the reniform nematode (Rotylenchulus reniformis), found in many tropical regions and certain warmer areas of the temperate zone, including the southern United States from Texas eastward. Nematode resistance is defined as a trait that limits the ability of a nematode to reproduce on a favorable host. This section reviews resistance in cotton to M. incognita and R. reniformis and summarizes the history, current status, and future prospects for developing and improving nematode-resistant cotton cultivars. High levels of nematode resistance can help suppress Fusarium wilt, which is greatly exacerbated by the presence of root-knot nematode and the Fusarium fungus. Both known and potential sources of resistance to the root-knot nematode and the reniform nematode are given along with documented resistance QTLs and genes associated with those sources of resistance. Selected references for additional information are given.